With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
caqMacAceSrcMac
Cisco Access Control List QoS Mac Ace Source Mac
1.3.6.1.4.1.9.9.179.1.3.4.1.5
Indicates the 48 bits source MAC address. The packet's source address is AND-ed with the value of caqMacAceSrcMacMask and then compared against the value of this object. If this object value is 00-00-00-00-00-00, and the value of caqMacAceSrcMacMask object in the same entry is ff-ff-ff-ff-ff-ff, this entry matches any source Mac address.
Back to CISCO-CATOS-ACL-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor caqMacAceSrcMac on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.